mule butter 

has spreadabilty, but stubborn,

The fukin mule butter is runny and will not leave.

mule butter by stunx September 27, 2008

buttered mule 

a fat red sloppy useless sweating disgusting mess who doesn't know how to do anything and is uncooperative and unskilled but somehow has everyone fooled into thinking he is good to have around

"That guy is a red buttered mule."

"I can't stand that red buttered mule."

buttered mule by Bill Wang October 13, 2008